Graphite Seal Ring for Mechanical Pump
Product Overview
Jincheng graphite seal rings are self-lubricating carbon-graphite components designed for mechanical seals in pumps, compressors, and rotating equipment. These seal rings provide excellent wear resistance and low friction operation, even in high-temperature and corrosive fluid applications.
Our graphite seal rings are manufactured from resin-impregnated carbon graphite materials, offering impermeability and long service life. Custom sizes and special geometries are available to fit various mechanical seal designs and pump specifications.
Key Features
- Self-lubricating properties for dry running capability
- Excellent wear resistance extends seal life and reduces maintenance
- Low friction coefficient for energy efficient operation
- Corrosion resistant to most chemicals and process fluids
- High temperature resistance up to 400°C in air, higher in inert atmosphere
- Impermeable structure with resin impregnation for zero leakage
- Precision ground surfaces for perfect seal face flatness
- Available in various grades for different pressure and speed conditions
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Resin impregnated carbon graphite |
| Density | 1.75 - 1.85 g/cm3 |
| Shore Hardness | 80 - 95 HS |
| Compressive Strength | 120 - 180 MPa |
| Flexural Strength | 60 - 90 MPa |
| Porosity | < 0.5% (resin impregnated) |
| Max PV Value | 100 - 200 m/s * bar |
| Operating Temperature | -200°C to 400°C (air) |
| Surface Flatness | ≤ 0.0009 mm (3 light bands) |
| Roughness | Ra ≤ 0.1 μm |
Applications
- Centrifugal pumps for water, oil, and chemical processing
- Rotary compressors for gas and refrigeration systems
- Mixers and agitators in chemical and pharmaceutical industry
- Valve stems and shafts for sealing against process fluids
- Food and beverage pumps for sanitary and non-contaminating service
- Marine pumps for seawater and offshore applications
Why Choose Jincheng Seal Rings?
- Specialized carbon graphite grades for sealing applications
- Precision grinding for seal face flatness and roughness requirements
- Custom sizes and geometries - O-rings, face seals, and custom profiles
- Various impregnation options - resin, metal, or PTFE for different media
- Strict quality control with flatness and surface finish inspection
- Cost-effective alternative to imported seal face materials
- Fast sample delivery for seal development and testing
- Global supply to seal manufacturers and pump OEMs worldwide
Frequently Asked Questions
Q1: What is the difference between resin-impregnated and metal-impregnated graphite seals?
A: Resin-impregnated graphite is used for general chemical and water applications. Metal-impregnated (antimony, babbitt) graphite is used for high-pressure and high-temperature applications where dry running may occur.
Q2: What is the required surface finish for seal faces?
A: Mechanical seal faces typically require surface flatness of 3 light bands (0.0009mm) and surface roughness Ra of 0.1μm or better. We provide precision grinding to these specifications.
Q3: Can you manufacture custom seal ring sizes?
A: Yes, we produce custom-sized seal rings based on your drawings or samples. Please provide dimensions, material grade, and application details for quotation.
Q4: What is the typical lead time for custom seal rings?
A: Standard sizes are in stock. Custom sizes typically require 1-2 weeks for production and precision grinding.
Hot Tags: graphite seal ring, mechanical seal, carbon graphite ring, pump seal, seal face, graphite ring blank, graphite ring chemical resistant, graphite ring compressor system, graphite ring for industrial automation, graphite ring for metallurgical furnace, machined graphite ring
